Audi A4

since 1994 of release

Repair and car operation

A4 Audi
+ Running gear
+ Regular servicing
+ Engines
- Turbo-supercharging
   Valve of switching off of draft
   Check of adjustment of pressure of pressurization
   The help at malfunctions
   The turbokompressor is faulty?
   Radiator of nadduvochny air
+ exhaust System
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and absorption channels
+ injection System
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ ignition System
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics

The help at malfunctions


The turbine of a turbokompressor (2) is put in action by pressure of following exhaust gases. Lopastnoye a wheel (1) on the party of absorption is actuated by passable shaft with big frequency of rotation at the expense of what soaked-up air can be condensed. In chambers of combustion much more air providing the increased capacity or higher torque arrives. As soon as pressure in the chamber of absorption becomes higher necessary, the vacuum box of adjustment (3) pressure of pressurization opens the bypass suited and passes a part of exhaust gases by a turbokompressor in exhaust system. The electromagnetic valve of adjustment of pressure of pressurization is built in an operating tube (4) for the accounting of influence of heights on pressure of pressurization.

а) Air;
б) Exhaust gas.

If Audi Turbo develops much lowered capacity or the maximum speed is not reached, the reason can be in a faulty turbokompressor.

Before search of malfunctions it is necessary to be convinced that the engine and injection system of serviceability.

Your help

A.Detali of system of an exhaust and a turbo-supercharging are not tight

1. The air hose between the compressor and an inlet collector over a radiator of nadduvochny air is not tight or was disconnected
2. The site between an inlet collector and a head of the block of cylinders is not tight
3. Flanges at an inlet collector are not tight
4. Not tight site between a final collector and a head of the block of cylinders or a turbokompressor
V.Neispraven turbokompressor 1. Check pressure of pressurization. If it too high:
check the electromagnetic valve of restriction of pressure of pressurization, check a vacuum box of the valve of adjustment of pressure of pressurization. If that and another in working condition, interview a memory of malfunctions in the car
2. Pressure of pressurization the too low:
check a vacuum box of restriction of pressure of pressurization. If it is serviceable, replace a turbokompressor